Due to Covid-19, I have to work from home. I paid £20.99 online for an EE/T-Mobile top-up on a brand new SIM card, my work covered the costs but itís my responsibility to set it all up.

I put the EE/T-Mobile SIM into my Samsung PAYG phone and followed instructions on how to top-up - the message I received back on the phone was that I could not text the top-up code because the balance on the phone is zero.

So, I can't top up because there is no money on my phone and there is no money on my phone because I cannot top-up.

Also, when I try to phone this new number I get a message saying 'the phone you have called is currently unavailable' so, it appears the SIM hasn't been activated. How do I do that?